Box-motion for looms



W. J. CROWLE.

BOX MOTION FOR LOOMS. APPLICATION FILED MAR. 4. 1920.

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BOX MOTION FOR LOOMS. APPLICATION EI'LED MARY. 4,1920.

Patented Aug; 31, 1920..

3 SHE ETSSHEET 2.

W. J. CROWLE.

BOX MOTION FOR LOOMS. 7 APPLICATION FILED MAR. 4, 1920.

1 35 1 ,099.. at nted Aug- 31, 1920.

3 SHEETS-SHEET 3.

WILLIAM JOHN CROWLE, OF EiS-TON, PENNSYLVANIA.

BOX-MOTION res. LOOMS.

' Application filed March 4,

To all whom 2'25 may concern:

e it known that T, WILLIAM JOHN Crowns, a. citizen of the United States, residing at Easton, in the county of Northampton and State of Pennsylvania, have in vented new and useful Improvements in ior-Motions for Looms, of which the following is a specification.

his invention relates to improvements in box motions for looms, and particularly to improvements in shuttle-box actuating or controlling means for the raising and lowering of the boxes at the right periods for the manufacture of cloth requiring two picks each of a right and left twistthread or two picks each of two colors.

One object of my invention is to provide novel and simplified means, in place of the numerous parts heretofore employed, for raising and lowering the shuttle-box or boxes at proper periods.

Another object of the invention is to provide shuttle-box actuating or controlling means which isadapted for use on either or both sides of the loom. 7

Still another object of the invention is to provide shuttle-box actuating or controlling means which may be employed in duplicate for controlling sets of boxes on both lay ends, one set of controlling means acting one pick ahead of the other, whereby the loom may be adapted for weaving cloth requiring one pick each of three different colors or twist threads.

The invention consists of the features of construction, combination and arrangement of parts, hereinafter fully described and claimed, reference being had to the accon panying drawings, in which:

Figure 1 is an end elevation of the head motion of a loom embodying my invention.

Fig. 2 is a view in side elevation of parts of the head motion.

Fig. 3 is a vertical longitudinal section on line 33 of Fig. 1. r

Fig. at is a vertical longitudinal section on line of Fig. 1, showing particularly my improved shuttle-box actuating means.

Fig. 5 is a view of parts of the mechanism illustrated in Fig. a 011 an enlarged scale and with the actuating lever and cam in a different position.

F 6 is a top plan view of the parts shown in Fig. 1.

Referring to the drawings, 1 designates a portion of the main frame of the loom; 2, the

' Specification of Letters Patent.

Patented Aug. 31, 1920. 1920. Serial No. 383,145.

loom arch or head stand; 3 and 4, the upper and lower cylinder gear shafts carrying the upper and lower cylinder gears 5 and 6; 7, the vibrator gears; 8, the vibrator levers: 9, the harness jacks coupled to the vibrator gears by the connectors 10; 11,.the pattern chain cylinder shaft carrying gears 12 driven by pinions 13 on the shaft a; 1 1, the pattern chain; and 15, a cross rod pivotally supporting the levers S at their rear ends. These parts may be of the ordinary type employed in looms in common use.

My attachment comprises a shuttle-box actuating or controlling lever 16 pivotally mounted at one end 1'? on the cross rod 15 and provided at its opposite end with an elongated slot 18. Intermediate its ends the lever is provided with a contact member in the form of a friction roller 19 for cooperation with a shuttle-box actuating or controlling cam .20. The cam 20 comprises a substantially quadrantal disk loosely mounted on the shaft 11 at one side of one of the gears 12 and fixed to said gear for rotation therewith by a screw or other suit able fastening'device 21. The cam has an inner curved'contact surface'QQ, an outer or peripl'ieral curved contact surface 23, and straight side surfaces 2% and 25 for co operation with the friction roller 19.

The lever 16 is periodically moved up ward and downward or vibrated through the action of the cam to successively raise and lower the shuttle-boxes. This lever is shown as suitably connected to a shuttle-box 26 movable in a suitable guide 26. The connecting means shown in the present instance (see Fig. comprises a chain or like flexible connection QT secured at one end to the slotted end 18 of the lever and at its op posite end to a bracket member 28, said chain being properly trained over guide pulleys 29. The bracket member 28 is fixed to a lifter rod 30 attached to the shuttle-box 26 and itself slidably mounted for movement in a vertical plane in a stationary guide bracket 81 suitably mounted on the main frame 1 of the loom. Surrounding the lifter rod 30 between the guide 26 and the bracket member 23 is a coiled cushioning and retracting spring 32, adapted to be compressed on the upward movement of the rod 30 and operating by :zpansion to move the rod and shuttle-box carried thereby downward. The end of the chain 27 attached to the slot 18 of the lever 16 is connected with a threaded stem or bolt 33 slidably mounted in the slotted end 18 and adapted to be secured in adjusted position by a nut 34, the arrangement being such that the point of attachment of the chain 27 to the lever with relation to the pivoted end of the lover may be varied, to correspondingly vary the amount of motion transmitted on each movement of they lever to the shuttleboX, as conditions in service may require.

Fig.4 shows the lever 16 at the limit of its upward or shuttle-box raising movement, and Fig. 5 shows the lever at or near the limit of its downward movement in which the shuttle-box is in lowered position. When the cam 20 raises the lever and moves the chain 27' an up pull is transmitted. to the bracket member 28 to lift the rod 30 and compress the spring 32, which raises the shuttle-box a prescribed degree in an obvious manner. 'When the lever 16 descends and relaxes the chain 27, the spring 32 expands, depressing the lifter rod30 and returning the shuttlebox to its normally lowered position. The formation of the cam 20 is such that the shuttle-box is in its lowered position when the friction roller 19 traverses the cam surface 22 and begins to traverse the cam surface 24:, the lever being in its lowermost position when the roller is at the point of intersection of said surfaces. As the cam rotates in the direction of the arrow shown in Fig. 5 from the lowest or starting point mentioned, the surface 2 1 traveling in contact with the friction roller 19 gradually raises the lever 16 until the friction roller reaches the adjacent point of the cam surface 23, whereby the shuttle will be gradually elevated and maintained in an elevated position .in the travel of the friction roller over the surface 23 and until it reaches the outer edge of the surface 25. In its travel along the cam surface 25 toward the surface 22 the lever 16 is lowered and maintained in lowered position until again raised by the cam surface 24-. Then the lever is lowered. the first shuttle-box will be in position for operation and will dwell there until the shuttle carrying the-one twist thread or color for two picks is thrown across the shed. lVhen the lever is elevated the second shuttle-boX will be raised to operative position and dwell there while the shuttle carrying the other twist thread or color is shot across the shed, so that on each complete revolution of the cam the first and second shuttleboxes will be alternately and successively moved into operative position for the proper action of the loom mechanism in the weaving of cloth requiring two picks each of a right andleft twist thread or two picks each of two colors. r V

The parts referred to constituting my invention are adapted to be employed in the place of the mechanism commonly used, consisting of balls, sinkers, links and equivalent devices which are subject to rapid wear and tear and quickly get out of order, my invention providing a simple, reliable and eflicient type of means for actuating and controlling the shuttle-box which is durable and not liable to easily get out of order, and whereby reliability of action and the efficiency of the loom will be materially increased.

lVhere but a single set of shuttle-boxes is employed at one side of the loom, a single lever and-cam is employed for use in connection therewith, but this lever and cam may be arranged on'either side of the loom, according to the arrangement of the shuttleboxes, by simply reversing the position of the cam 20, thatis, securing it by means of its fastening screw 21 in a proper manner to one or the other of the gears 12, as the case may be. In practice, my attachment also lends itself to another and important use, in that by employing two levers l6 and two cams 20 at opposite sides of and actuated by a gear 12 at one side of the loom, for cooporation with two sets of shuttle-boxes raised 7 any other type of loom,but reserve the right to apply it to any type of loom to which it is applicable. Also it is to be understood that the gears 12 may be made of various characters and the levers 16 of various lengths as may be required in the application of the invention to different sizes or types of looms or to suit any required or special conditions.

Having thus fully described my invention, I claim:

1. In a loom, shuttle-boxes, and shuttleboX raising and lowering mechanism including a lower cylinder gear shaft, of a vibrator gear shedding mechanism, a pattern chain cylinder shaft, gearing between said shafts, a vibratory lever, a cam actuated by said gearing for periodically raising and loweringthe lever, and connecting means between the lever and the shuttle-boxes.

2. In a loom, shuttle-boXes, a lower cylinder gear shaft, a pattern cylinder shaft, intermeshing gears on said shafts, a vibratory lever, a cam loose on the pattern cylinder shaft and fixed to the gear thereon, said cam being adapted to periodically raise and lower the lever, and connecting means between said. lever and the shuttle-boxes.

8. In a loom, shuttle-boxes, harness meching and raising and lowering the shuttle-box anisni vibrator lever operating means for operating lever, and connecting means beactuating the harness mechanism alternately tween the shuttle-box operating lever and 10 in opposite directions, a vibratory shuttlethe shuttle-box. 1

5 box operating lever, a cam operated by a In testimony whereof I affix my signature part of said vibrator lever operating means and having surfaces for periodically engag- WILLIAM JOHN CROWLE. 

